FIELD: polymer materials.
SUBSTANCE: invention deals with aqueous fluoropolymer dispersions containing no low-molecular weight fluorinated surfactant or containing the same in small amounts. Disclosed is, in particular, a fluoropolymer dispersion containing fluoropolymer particles with average size from 10 to 400 nm while dispersion contains no fluorinated surfactant having molecular mass below 1000 g/mole or contains the same in amount no higher than 0.025% based on the summary mass of dispersion solids. Dispersion further contains nonionic and anionic surfactants selected from those having molecular mass at least 1000 g/mole, non-fluorinated anionic surfactants, and mixtures thereof. Also disclosed are a method for obtaining dispersion of fluoropolymer particles and a method for depositing dispersion onto a substrate.
EFFECT: reduced viscosity of fluoropolymer dispersions with high content of solids including surfactants as stabilizers.
14 cl, 5 ex
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